I think the price is high. By using this punch it has become easier to open the square hole with ease. It is quite old type HP-1, but it was usable. You need to open a hole of 16φ for the prepared hole. I thought if there was an explanation about that I was wondering if 10φ is good. I think that it is good for those who have 45 hole holes frequently.

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Please make sure that it may or may not meet requirements of your country and/or international organizations,
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